Index Catalog // ScholarsArchive@OSU

Historical Change and the Hydrogeomorphic Context of Present-day Floodplain Forests in the Willamette Valley, Oregon

Creator:: Bervid, Heather D.
Abstract:: Floodplain forests play many important roles in the fluvial processes and environments of large alluvial rivers, including acting as geomorphological influences and habitat for native fish during high flows. Many large, gravel-bed river systems have undergone substantial change in recent centuries, resulting in loss of forested area to agriculture, reduction...
Resource Type:: Masters Thesis
Full Text:: . Valley-scale map of select reaches from Figure 1, depicting a,d) 1851 and b,e) 2020 floodplain forest

Diagnosis and Etiology of a Soilborne Disease Complex of Winter Squash (Cucurbita maxima) in the Willamette Valley, OR

Creator:: Rivedal, Hannah M.
Abstract:: Winter squash (Cucurbita maxima) grown in Oregon’s Willamette Valley for edible seed, frozen foods, and fresh markets is susceptible to an undiagnosed soilborne disease. Diseased squash fields exhibit symptoms of stunting, root and crown rot, vascular discoloration, and late-season wilt, which in extreme cases can lead to total crop failure....
Resource Type:: Dissertation
Full Text:: (e.g. P. cucumerina in stems and crown, and F. solani in roots and crown). Symptom severity tended to

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Creator:: Viste-Sparkman, Karen
Abstract:: Habitat loss causes a reduction in available resources for wildlife, alters the configuration of remaining habitat, and may isolate wildlife populations. White-breasted nuthatches (Sitta carolinensis) are experiencing long-term population declines in the Willamette Valley of Oregon, where they are historically associated with oak woodlands. As secondary cavity-nesters, white-breasted nuthatches may...
Resource Type:: Masters Thesis
Full Text:: the nuthatch data (P = 0.998), 0.27 AICc units better than uniform key function with cosine series

The Willamette Valley choices for the future

Creator:: Lawrence Halprin & Associates
Abstract:: This book is an environmental primer for the people of the Willamette Valley. It sets forth basic principles showing how men's actions cause future consequences in the environment.
Resource Type:: Book
Full Text:: use of cars 0nd visual p'<,llut:i.on {d~tcer) . . Po llcy limits use of power, reducing po I

Landscape Genomics and Climatic Responses of Willamette Valley Alders

Creator:: Kral, George L.
Abstract:: The climate of the Pacific Northwest is in flux, and existing forest ecosystems are stressed and poised to shift in fundamental ways, with or without human intervention. This dissertation probes the nature of forest responses to environmental change through investigations of morphology and genetics of three species of alder co-occurring...
Resource Type:: Dissertation
Full Text:: aments of the following year (D

Subsistence variability in the Willamette Valley

Creator:: Havercroft, Francine M.
Abstract:: During the summer of 1981, Oregon State University archaeologically tested three prehistoric sites on the William L. Finley National Wildlife Refuge. Among the sites tested were typical Willamette Valley floodplain and adjacent upland sites. Most settlement-subsistence pattern models proposed for the Willamette Valley have been generated with data from the...
Resource Type:: Masters Thesis
Full Text:: : APPENDIX D: APPENDIX E: 125 125 142 152 Fauna in the Wm. L. Finley National Wildlife Refuge 163

Decomposition of Brassicaceae Residue in the Willamette Valley

Creator:: Berry, Pete A.
Abstract:: An important inoculum source of Leptosphaeria maculans and L. biglobosa (syn Plenodomus spp.), the pathogens that cause black leg in Brassicaceae crops, is infected plant residues. The general acceptance of conservation tillage in the Willamette Valley, Oregon, USA, has enabled a build-up in the amount of residue on or near...
Resource Type:: Dissertation
Full Text:: 30 P re ci p it at io n ( cm ) Te m p er at u re ( °C ) Willamette Valley Average

Choices for the future: The Willamette Valley

Creator:: The Willamette Valley Livability Forum
Abstract:: Prepared for by the Willamette Valley Livability Forum. May 1999.
Resource Type:: Technical Report

ScholarsArchive@OSU

Historical Change and the Hydrogeomorphic Context of Present-day Floodplain Forests in the Willamette Valley, Oregon

Diagnosis and Etiology of a Soilborne Disease Complex of Winter Squash (Cucurbita maxima) in the Willamette Valley, OR

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

The Willamette Valley choices for the future

Landscape Genomics and Climatic Responses of Willamette Valley Alders

Subsistence variability in the Willamette Valley

Decomposition of Brassicaceae Residue in the Willamette Valley

Choices for the future: The Willamette Valley

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search